Reactions of Atmospheric Cluster Ions.

Abstract

A flow-drift tube instrument has been employed to measure the mobilities of five cluster ion systems that have been detected in the earth's atmosphere. The mobilities of NO+(H2O)0-2, H3O+(H2O)0-3, NH4+(NH3)0-3, NH4+(CH3CN)0-3, and NO+(CH3CN)0-3 were determined as a function of field strength by the dual ion signal depletion method. For H3O+(H2O)0-3 cluster ions, the reduced zero-field mobility decreases by almost equal amounts as a function of n, whereas for the NH4+(NH3)0-3, NH4+(CH3CN)0-3, and NO+(CH3CN)0-3 cluster ions, the decrease in mobility with cluster size is more gradual for higher n. A simple geometrical model based on the effective cross- sectional area of the cluster ions is consistent with the observed n-dependence of the mobilities. jg

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1995
Accession Number
ADA295705

Entities

People

  • Stephen R. Leone
  • Veronica M. Bierbaum

Organizations

  • University of Colorado Boulder

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Acetonitrile
  • Acquisition
  • Atmospheres
  • Chemistry
  • Classification
  • Colorado
  • Data Acquisition
  • Instrumentation
  • Ion Sources
  • Ions
  • Mobility
  • Molecules
  • Monitoring
  • Nitriles
  • Students

Readers

  • Plasma Physics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.